Hello, I would like to make a part-time status indicator using IPUMS CPS’s WKSTAT. The codes of WKSTAT changed in 1994, and I am wondering how I can classfy the codes to make a part-time status indicator consistently before and after 1994.
In the attached table, Method 1 classifies the codes based on whether the worker is usually part-time. Method 2 classifies the codes based on whether the worker is currently part-time. Method 3 classifis based on code number (10s are full-time, and 20s and 40s are part-time).
First, I would like to know whether Method 3 is valid. Especially, I would like to know why only “Part-time for non-economic reasons, usually full-time (code 12)” is classified into 10s, although other part-time status are coded into 20s.
Second, I appreciate if you could give me any thoughts of how I can classify the codes consistently before and after 1994.